#include<stdio.h>
#include<conio.h>
void main ()
{
   int a=2 ;
   float b = 6;
   clrscr () ;
   printf ("123456789\n") ;//dung de dem do rong ki tu can in ra
   printf ("%d\n", a) ;
   printf ("%4d\n", a) ;
   printf ("%-4d\n", a) ;
   printf ("%02d\n", a) ;
   printf ("%05d\n", a) ;
   printf ("%02d\n", b) ;
   printf ("%1d\n", b) ;
   getch ();
}